Home / 9,289.82-12,815.91-5,309.48

Finding the Fourth Proportional to 9,289.82, 12,815.91 and 5,309.48

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Solution

The fourth proportional to 9,289.82, 12,815.91 and 5,309.48 is: 7,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.82 : 12,815.91 = 5,309.48 : x
  2. Step 2: Convert to fraction form
    9,289.82/12,815.91 = 5,309.48/x
  3. Step 3: Cross multiply
    9,289.82x = 12,815.91 × 5,309.48
  4. Step 4: Simplify right side
    9,289.82x = 68,045,753.75
  5. Step 5: Solve for x
    x = 68,045,753.75/9,289.82
  6. Step 6: Final answer
    x = 7,324.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.